Footwear sole



FIG. 1 is a bottom perspective view of a footwear sole showing my new design.

FIG. 2 is a bottom plan view thereof.

FIG. 3 is a left side elevation thereof.

FIG. 4 is a right side elevation thereof.

FIG. 5 is a front elevation thereof; and,

FIG. 6 is a rear elevation thereof.

The broken line showing a footwear upper in the Figures is environmental and forms no part of the claimed design. 

I claim the ornamental design for a footwear sole, as shown and described. 